Why do people think they can tell China what to do? Or any other sovereign country.
As for what China is doing or shipping to Russia, I have seen no great proof of any of this. There is a fairly robust semiconductor industry in Russia. There is an interesting measurement of semiconductor junction size that correlates with application. Meaning:
Nearly all applications, including weapons, require Nehalem IPC (This is 45 nm). Really the only devices that demand 28nm and smaller are the top end iPhones. That’s right, weapons don’t really need what is in iPhones.
Russia and China both, outside TMSC, have been making their own 45 nm chips for many years, and Russia is upgrading to 28 nm next year.
This is all silly propaganda. No, Russia is not taking chips from washing machines. They could. That’s all the tech needed for modern weapons, but why bother when 45 nm chips come out of their foundries.
I imagine military chips need only be sturdy. They have very limited and specific functions. They don't need to run video-game graphics, stream porn, or write term-papers for college students.
US efforts to control Chinese "high end" chipmaking are really about protecting a lucrative industry American tech companies still mostly control, keeping Apple and Google on top, and keeping US tech as the global standard.
Moreover, imagine the disadvantage the NSA/DHS would be at if the world were using hardware and software standards controlled by China? And there would be no Chinese Edward Snowdens either to tell us about it.